Environment: milieu / climate zone / depth range / distribution range
Ekologi
; air tawar bentopelagis; pH range: 3.0 - 6.0. Tropical
South America: main stem of Amazon River, lower Negro River basin in Brazil.
Size / Weight / umur
Maturity: Lm ?  range ? - ? cm
Max length : 56.0 cm TL jantan/; (Ref. 39524); Berat maksimum terpublikasi: 250.00 g (Ref. 52797)
deskripsi pendek
Morfologi | Morfometrik
Duri punggung (Keseluruhan (total)): 0; duri punggung lunak (Keseluruhan (total)): 0; Sirip dubur lunak: 195 - 312. Body and head of living specimens uniformly black or very dark purple-brown with no humeral spot or patch; juveniles undergo striking pigmentation change from uniformly black by day to very pale with two distinct vertical saddle-like markings at night; dorsal margin of head well rounded (very convex) in adults (Ref. 52797).
Inhabits blackwater rivers and their seasonally inundated floodplain lakes and forests (Ref. 52797). Feeds on invertebrates (Ref. 52797).
Life cycle and mating behavior
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva
Crampton, W.G.R., K.G. Hulen and J.S. Albert, 2004. Redescription of Sternopygus obtusirostris (Gymnotiformes: Sternopygidae) from the Amazon basin, with description of osteology, ecology and electric organ discharges. Ichthyol. Explor. Freshwat. 15(2):121-134. (Ref. 52797)
Status IUCN Red List (Ref. 130435)
ancaman kepada manusia
Harmless
penggunaan manusia
informasi lanjut
Nama-nama umumSinonim (persamaan)metabolismePemangsaEkotoksikologiReproduksi, perkembang biakanKematanganPemijahanSpawning aggregationFecunditytelur-telurpekembangan telor
Umur / SaizPertumbuhanpanjang-beratpanjang-panjangukuran frekuensiMorfometrikMorfologiLarvaDinamika larvapemulihanKelimpahanBRUVS
AcuanBudidaya airprofil budidaya airStrainGenetikaElectrophoresesDiturunkanPenyakit-penyakitPengolahanNutrientsMass conversion
mitraGambarStamps, Coins Misc.Suara-suaraCiguateraKecepatanTipe renangArea insangOtolithsOtakPenglihatan / visi
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±0.42 se; based on food items.
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (42 of 100).